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Note 4 - Loans and Allowance for Credit Losses - Schedule of Nonaccrual Loans by Class (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	$ 44,299	$ 45,764
Financing Receivable, Excluding Accrued Interest, Nonaccrual	51,276	54,433
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	202	8,453
Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	33,818	35,774
Financing Receivable, Excluding Accrued Interest, Nonaccrual	40,315	41,757
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	8,400
Commercial Borrower [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	2,885	2,952
Financing Receivable, Excluding Accrued Interest, Nonaccrual	3,035	3,218
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	8,400
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	30,154	31,561
Financing Receivable, Excluding Accrued Interest, Nonaccrual	36,501	37,278
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction, Land, and Development [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	28,615	24,638
Financing Receivable, Excluding Accrued Interest, Nonaccrual	34,827	30,044
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	209	0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	209	0
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-Owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	0	5,217
Financing Receivable, Excluding Accrued Interest, Nonaccrual	0	5,217
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loans [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	1,330	1,706
Financing Receivable, Excluding Accrued Interest, Nonaccrual	1,465	2,017
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	779	1,261
Financing Receivable, Excluding Accrued Interest, Nonaccrual	779	1,261
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	779	609
Financing Receivable, Excluding Accrued Interest, Nonaccrual	779	609
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Production Loans [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	0	652
Financing Receivable, Excluding Accrued Interest, Nonaccrual	0	652
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	10,481	9,990
Financing Receivable, Excluding Accrued Interest, Nonaccrual	10,913	12,338
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	202	53
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, First Lien [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	2,379	2,614
Financing Receivable, Excluding Accrued Interest, Nonaccrual	2,651	2,988
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	202	53
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	4,680	4,680
Financing Receivable, Excluding Accrued Interest, Nonaccrual	4,680	4,680
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	1,102	0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	1,214	1,460
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, Junior Lien [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	2,320	2,696
Financing Receivable, Excluding Accrued Interest, Nonaccrual	2,368	3,210
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0	0
Consumer Borrower [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	10,481	9,990
Financing Receivable, Excluding Accrued Interest, Nonaccrual	10,961	12,676
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	202	53
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Consumer, Other [Member]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	0	0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	48	338
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	$ 0	$ 0

X

- Definition

Amortized cost excluding accrued interest, of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
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+ References

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